AlphaNode's blog

By AlphaNode, history, 4 weeks ago, In English,

Hello recently I attempted this problem: http://codeforces.com/contest/341/problem/D

I understand editorial's solution, but I found in comments a very nice solution, that appears it can be generalized to query sums or higher dimensions. Here is it.

Spoiler

Link to code : http://codeforces.com/contest/341/submission/4391987

I could only get a vague idea, but not much into detail of what's going on especially the code. With this being a 4 years old comment, I don't think it's a good idea to ask the guy who posted, but can anyone please clarify in an easier way, or provide similar problems/blogs to it? Perhaps how to solve this problem if it was for sum queries instead of xor using this technique.

Thanks.

 
 
 
 
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4 weeks ago, # |
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See this.